Grinding machine



Feb. 13, 1934. F, KOESTLIN GRINDING MACHINE Filed March 17, 1950 a ZIW i/ I N V E N TOR. ami/ Q ATTORNEY.

Patented Feb. 13, 1934 UNITED STATES GRINDING MACHINE Herman F. Koestlin, Detroit, Mich., Orville H.

Foster, Jr., and Theodore J. Richter, administrators of said Herman F. Koestlin, deceased Application March 17,

6 Claims.

My invention relates to a new and useful improvement in a grinding machine and has for its object the provision of a grinding machine whereby the grinding tool may be tilted to the vertical and adjusted vertically.

Another object of the invention is the provision in a grinding machine of this class of means for quickiy and bodily vertically adjusting the grinding tool without disturbing a screw adjusting to mechanism.

Another object of the invention is the provision in a grinding machine of this class of an easily movable horizontally adjustable dressing tool.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanying drawing which forms 20 a part of this specification, and in which,

Fig. l is a side elevational view of the invention with parts shown in section.

Fig. 2 is a sectional view taken on line 2--2 of Fig. 1.

Fig. 3 is a sectional view taken on line 3-3 of Fig. 1.

Fig. 4 is a sectional view taken on line 4--4 of Fig. 1.

Fig. 5 is a sectional view taken on line 5-5 30 of Fig. 1.

The invention which is illustrated as mounted on a bed 9 comprises a standard 10 having the side flanges 11 which serve as reinforcements therefore. A dove-tailed groove 13 is formed in 35 this standard in which engages the dove-tailed projection 14 of the supporting bracket 15. A bearing 16 projects outwardly from the dove-tailed projection 14 and engages in a groove 17 formed in one face of the standard 10. Threaded into 49 the bearing 16 is the stem 18 which has a reduced portion 19 engaging in an opening formed in the laterally turned portion 20 of the bar 21 which is slidably projected through the guide 22 formed on the standard 10. Pivotally connected to the lower end of the bar 21 is the toggle joint 23,

the other joint 24 of which is fixedly mounted on the shaft 25 which is provided with the hand wheel 26.

In operation, upon a threading of the stem 18 in one direction by the hand wheel 27, the bracket 15 will be moved upwardly of the standard 10. A reverse threading of the stem will permit the bracket 15 to move downwardly by gravity.

This movement of the bracket 15 vertically will be effected slowly depending on the speed of 1930. Serial No. 436,348

rotation of the screw 18. When it is desired to move the bracket vertically quickly, a rotation of the shaft 25 will eifect a rocking of the toggle section 24 upwardly to bring the parts quickly into the position shown in dotted lines in Fig. 1, the plate 21 movin upwardly in this movement.

A stud 28 projects from the bar 21 and extends through an enlarged opening formed in the member 23. A spring 29 embracing this stud engages the head 30 so as to normally resist outward rocking movement of the toggle 23 relatively to the bar 21.

A motor 31 is provided for rotating the grinding tool 33. This motor casing is mounted pivotally on the upper end of the bracket 15 by means of a bolt projected through the lug 34 and the bracket 15. A lug 35 projects outwardly from the lower end of the motor casing and is provided with an arcuate slot 36 through Which the bolt 37 which is projected through the lug 38 of the bracket 15 engages. Upon a loosening of the nut on the bolt 37, the motor 31 may be tilted inwardly and outwardly of the supporting standard and secured in its various positions of tilt. Thus there is provided a means for tilting the axis of the grinding tool 33 relatively to the vertical by moving it inwardly and outwardly of the support. giiaduations 39 serving to indicate the angle of ti t.

In operation, the work piece would be projected into or through the opening 40 formed in the bed 9 so that the grinding tool 33 might be brought into engagement with the work piece. By having the mounting as shown so that the grinding tool may be brought into a position tilted relatively to the vertical, angular grinding on the work piece may be effected.

A dressing tool 41 ismounted in a dressing tool holder 42 which may be moved horizontally so as to approach and withdraw from the grinding tool and be brought into contact therewith for dressing purposes. A wing nut 43 serves to clamp this dressing tool holder in fixed relation on the boss 44 which is formed on the standard.

While I have illustrated and described the preferred form of construction of my invention, I do not wish to limit myself to the precise details of structure shown, but desire to avail myself of such variations and modifications as may come within the scope of the appended claims.

Having thus described my invention what I claim is new, and desire to secure by Letters Patent is:

1. In a. device of the class described: a supporting standard; a. grinding machine; means for supporting said grinding machine on said standard movable vertically thereon and swingable relatively thereto inwardly and outwardly thereof; and screw operated means for moving said grinding machine vertically of said standard; and a toggle mechanism for moving said grinding machine and said screw operated means vertically of said standard.

2. A grinding machine of the class described, comprising: a supporting standard; a grinder; means for mounting said grinder on said standard swingable relatively thereto; and means for moving said mounting means vertically relatively to said standard; and a toggle mechanism for simultaneously moving said moving means and said mounting means vertically relatively to said standard.

3. A device of the class described, comprising: a vertically directed supporting standard; a supporting bracket longitudinally slidable on said standard; a grinding machine; means for mounting said grinding machine on said bracket tiltable to various angles relatively to the vertical; screw means for supporting said bracket and moving the same longitudinally of said standard; a bar movably mounted on said standard and supporting said screw means; and a toggle mechanism for moving said screw means vertically relatively to said standard.

4. In a device of the class described: a supporting standard; a bracket slidably mounted on said standard; means for sliding said bracket longitudinally of said standard; a grinder; means for mounting said grinder swingably on said bracket for swingable movement inwardly and outwardly of said standard; and means for locking said grinder against swingable movement relatively to said standard.

5. In a device of the class described: a supporting standard; a grinding machine; means for mounting said grinding machine outwardly of said standard and swingable from adjacent one of its ends inwardly and outwardly of said standard at its opposite end; and means for locking said grinder against swingable movement in its various positions of swinging.

6. In a device of the class described: a supporting standard; a grinding machine; means for mounting said grinding machine outwardly of said standard and swingable from adjacent one of its ends inwardly and outwardly of said standard at its opposite end; means for locking said grinder against swingable movement in its various positions of swinging; and means for moving said mountings longitudinally of said standard.

HERMAN F. KOESTLIN. 

